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BOSTON MARATHON 2025

Colby Nixon

Bib: 6152•M

ME

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 13%
Division (M18-39)
#0 / 5642
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:36
Rank: #4837
Start → 5K
20:36 | 6:38/mi
10K· 6.21 mi
40:59
Rank: #4455 (+382)
5K → 10K
20:23 | 6:34/mi
15K· 9.32 mi
1:00:59
Rank: #3970 (+485)
10K → 15K
20:00 | 6:26/mi
20K· 12.43 mi
1:21:39
Rank: #3937 (+33)
15K → 20K
20:40 | 6:39/mi
Half· 13.11 mi
1:26:05
Rank: #3920 (+17)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:41:52
Rank: #3737 (+183)
Half → 25K
15:47 | 6:31/mi
30K· 18.64 mi
2:02:03
Rank: #3314 (+423)
25K → 30K
20:11 | 6:30/mi
20M
2:10:46
Rank: #3087 (+227)
30K → 20M
8:43 | 6:25/mi
21M
2:17:31
Rank: #2943 (+144)
20M → 21M
6:45 | 6:45/mi
35K· 21.75 mi
2:22:17
Rank: #2871 (+72)
21M → 35K
4:46 | 6:22/mi
23M
2:30:23
Rank: #2735 (+136)
35K → 23M
8:06 | 6:28/mi
24M
2:36:39
Rank: #2607 (+128)
23M → 24M
6:16 | 6:16/mi
40K· 24.85 mi
2:42:03
Rank: #2501 (+106)
24M → 40K
5:24 | 6:19/mi
25.2M
2:44:16
Rank: #2436 (+65)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:50:06
Rank: #2289 (+147)
25.2M → Finish
5:50 | 5:43/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:26:05
Pace6:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:01
Pace6:25 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4320:366:3820:36
6:38
-
10K
6.21 mi10:46:0640:596:3620:23
6:34
-0:04
15K
9.32 mi11:06:061:00:596:3320:00
6:26
-0:08
20K
12.43 mi11:26:461:21:396:3420:40
6:39
+0:13
Half
13.11 mi11:31:121:26:056:344:26
6:30
-0:09
25K
15.53 mi11:46:591:41:526:3315:47
6:31
+0:01
30K
18.64 mi12:07:102:02:036:3320:11
6:30
-0:01
20M
20.00 mi12:15:532:10:466:328:43
6:25
-0:05
21M
21.00 mi12:22:382:17:316:336:45
6:45
+0:20
35K
21.75 mi12:27:242:22:176:334:46
6:22
-0:23
23M
23.00 mi12:35:302:30:236:328:06
6:28
+0:06
24M
24.00 mi12:41:462:36:396:326:16
6:16
-0:12
40K
24.85 mi12:47:102:42:036:315:24
6:19
+0:03
25.2M
25.20 mi12:49:232:44:166:312:13
6:26
+0:07
Finish
26.22 mi12:55:132:50:066:305:50
5:43
-0:43

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:43 /mi

Average Pace

6:30 /mi

Slowest Pace

6:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:06

7% of race

Time at Steady Pace

2:31:15

89% of race

Time at Slower Pace

6:45

4% of race

Average Pace: 6:29 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:25:4320:366:3820:36
6:38
#4837
10K
6.21 mi10:46:0640:596:3620:23
6:34
#4455
15K
9.32 mi11:06:061:00:596:3320:00
6:26
#3970
20K
12.43 mi11:26:461:21:396:3420:40
6:39
#3937
Half
13.11 mi11:31:121:26:056:344:26
6:30
#3920
25K
15.53 mi11:46:591:41:526:3315:47
6:31
#3737
30K
18.64 mi12:07:102:02:036:3320:11
6:30
#3314
20M
20.00 mi12:15:532:10:466:328:43
6:25
#3087
21M
21.00 mi12:22:382:17:316:336:45
6:45
#2943
35K
21.75 mi12:27:242:22:176:334:46
6:22
#2871
23M
23.00 mi12:35:302:30:236:328:06
6:28
#2735
24M
24.00 mi12:41:462:36:396:326:16
6:16
#2607
40K
24.85 mi12:47:102:42:036:315:24
6:19
#2501
25.2M
25.20 mi12:49:232:44:166:312:13
6:26
#2436
Finish
26.22 mi12:55:132:50:066:305:50
5:43
#2289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4837452745273156(Top 11%)3002(Top 19%)3002(Top 53%)
10K6.21 mi3.10 mi4455+3824188+3394188+3394132(Top 15%)3885(Top 24%)3885(Top 69%)
15K9.32 mi3.11 mi3970+4853741+4473741+4473156(Top 11%)3002(Top 19%)3002(Top 53%)
20K12.43 mi3.11 mi3937+333707+343707+344007(Top 14%)3762(Top 23%)3762(Top 67%)
Half13.11 mi0.68 mi3920+173690+173690+173587(Top 13%)3387(Top 21%)3387(Top 60%)
25K15.53 mi2.42 mi3737+1833527+1633527+1632926(Top 10%)2782(Top 17%)2782(Top 49%)
30K18.64 mi3.11 mi3314+4233137+3903137+3901965(Top 7%)1868(Top 12%)1868(Top 33%)
20M20.00 mi1.36 mi3087+2272930+2072930+2071301(Top 5%)1229(Top 8%)1229(Top 22%)
21M21.00 mi1.00 mi2943+1442793+1372793+1371371(Top 5%)1297(Top 8%)1297(Top 23%)
35K21.75 mi0.75 mi2871+722726+672726+671896(Top 7%)1780(Top 11%)1780(Top 32%)
23M23.00 mi1.25 mi2735+1362598+1282598+1281365(Top 5%)1284(Top 8%)1284(Top 23%)
24M24.00 mi1.00 mi2607+1282474+1242474+1241219(Top 4%)1144(Top 7%)1144(Top 20%)
40K24.85 mi0.85 mi2501+1062372+1022372+1021014(Top 4%)951(Top 6%)951(Top 17%)
25.2M25.20 mi0.35 mi2436+652310+622310+62377(Top 1%)351(Top 2%)351(Top 6%)
Finish26.22 mi1.02 mi2289+1472172+1382172+138400(Top 1%)376(Top 2%)376(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3156

Males

3002

M18-39

3002

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4132

Males

3885

M18-39

3885

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3156

Males

3002

M18-39

3002

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

4007

Males

3762

M18-39

3762

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3587

Males

3387

M18-39

3387

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2926

Males

2782

M18-39

2782

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1965

Males

1868

M18-39

1868

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1301

Males

1229

M18-39

1229

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1371

Males

1297

M18-39

1297

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1896

Males

1780

M18-39

1780

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1365

Males

1284

M18-39

1284

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1219

Males

1144

M18-39

1144

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1014

Males

951

M18-39

951

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

377

Males

351

M18-39

351

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

400

Males

376

M18-39

376

Passing Analysis

Category:
Athletes Passed
2698
Passed By
150
Net Change
+2548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4837
5K → 10K42038+382#4837#4455
10K → 15K4872+485#4455#3970
15K → 20K11582+33#3970#3937
20K → Half269+17#3937#3920
Half → 25K1929+183#3920#3737
25K → 30K4241+423#3737#3314
30K → 20M2270+227#3314#3087
20M → 21M1451+144#3087#2943
21M → 35K731+72#2943#2871
35K → 23M1382+136#2871#2735
23M → 24M1313+128#2735#2607
24M → 40K1082+106#2607#2501
40K → 25.2M650+65#2501#2436
25.2M → Finish1470+147#2436#2289
TOTALS2698150+2548
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing